/**
 * Does the docked strip have room for the previously-spoken chunk?
 *
 * ★★ Lives here, not in `VoiceMiniController`, so it can be tested by CALLING
 * it. The mini caption's other invariants are pinned by reading the component's
 * source as text, which is all that is available for JSX — but this is a pure
 * decision about lengths, and a real test that feeds it real chunk sizes is
 * worth more than a grep for its name.
 */
/**
 * Roughly how many characters survive the strip's three-line clamp.
 *
 * ★★ Derived, not guessed — and the first version of this got it wrong in a
 * way worth recording. It estimated ~75 characters of capacity and then set
 * the budget to 160, so an 80+80 pair passed: the previous chunk is rendered
 * FIRST, so it consumed the whole clamp and hid the sentence being spoken.
 * The number contradicted the reasoning printed directly above it, and it
 * re-admitted the exact bug this module exists to prevent.
 *
 * The arithmetic, at the docked panel width both products ship (440px):
 *   440 − px-3 (24) − px-4 (32) − gap-3 (12) − orb w-40 (160) ≈ 212px
 * and on a 320px phone the same subtraction leaves ≈ 92px. At `text-sm`
 * (14px, ~7px average advance) that is ~30 and ~13 characters a line, so the
 * three-line clamp holds roughly 90 and 40 characters respectively.
 *
 * The budget is the NARROWEST of those, not an average — 70 was the second
 * wrong answer here. A single constant cannot be right for both widths, and
 * the promise being kept is "the sentence being spoken is never dropped". Only
 * fitting the smallest layout keeps it everywhere; sizing for the docked
 * desktop case means a 40+30 pair passes and then clips the current chunk on a
 * phone, which is the whole defect again in a narrower window.
 *
 * Erring small costs a little unused room on wide panels. Erring large costs
 * the feature on small ones. Those are not symmetric.
 *
 * The consequence is deliberate: with chunks running to `SPEECH_CHUNK_CHARS` =
 * 180, context will often NOT be shown — the honest answer, because there is
 * often no room. "When there is room" has to mean something for the promise to
 * hold at all.
 */
export declare const MINI_CAPTION_BUDGET = 40;
export declare const showPreviousChunk: (synced: {
    chunks: string[];
    index: number;
}) => boolean;
//# sourceMappingURL=miniCaptionBudget.d.ts.map